Now the world's largest car market, China has become prime territory for global carmakers like Ford Motor Co., Toyota Motor Corp., General Motors, Mercedes-Benz and the rest of the auto industry. The hot trends at this year's Shanghai Auto Show - luxury is up and green is coming on strong. Find out how marketers are reacting to change in consumer demand this week on Thoughtful China. Panel:Mike Nash - Business Director, JWT ChinaBryce Whitwam - General Manager, Wunderman Shanghai